Principle: Real time
(3) Load control systems using feedback
- A network provides a 'stop' signal when it can't absorb more data
- There has to be enough buffering to absorb the additional data that may be sent while the 'stop' signal makes its way back to the sender
- If the 'stop' comes from the receiver then the receiver should have enough buffering to cover a sender-receiver-sender round trip
- If the assumed round-trip time is too short, data will be lost
- If it's too long, bandwidth will suffer